I am using a TT4. I would like to have the battery voltage and temperature displayed graphically. I am able to get the true values to display in the comment section & raw data pagaes on aprs.fi, but can't get it graphed correctly.

These are my TT4 settings:

ABAUD is 19200

ALIAS1 is WIDE1

ALIAS2 is

ALIAS3 is

ALTNET is APTT4

AMODE is TEXT

BANK is 0

BBAUD is 000

BMODE is GPS

BNKMODE is 0

BPERIOD is 0

BTEXT is >/TinyTrak Alpha

CDLEVEL is 20

CDMODE is INVERTED_PIN2

DDIST is FALSE

DEC96 is FALSE

DECSTAT is FALSE

DIGIID is FALSE

DIGIMY is FALSE

DMETRIC is FALSE

DMSDISP is FALSE

DUPETIME is 30

ENTS is FALSE

FILTERCALL is IS

FRAWDISP is FALSE

GALT is 80

GKRELAY is 0

GPSCHK is FALSE

GRELAYBITS is 1

GRELAYRATE is 0

GWAYLEN is 9

GWAYMODE is NMEA

HEADERLN is FALSE

HRAWDISP is FALSE

INTCLK is FALSE

LEDS is TRUE

LOCATION is 3516.8600N 09001.2000W

LRNTPS is FALSE

MICETMV is FALSE

MMSG is 0

MPPERIOD is 0

MSGCAP is FALSE

MSGCMD is FALSE

MTXD is 10

MYCALL is KN4USN-2

NODISP is FALSE

P300 is FALSE

PATH1 is WIDE1-1

PATH2 is WIDE2-2

PATH3 is

PAVPEN is FALSE

PERSIST is 65

PKTICOM is FALSE

PKTOCOM is FALSE

PPATHING is FALSE

PPERIOD is 1800

PREEMPT is FALSE

QUIET is 10

RPATHDISP is FALSE

RXAMP is 12

RXFREQ is 144.390

RXSQUELCH is 0

SBEN is FALSE

SBFPERIOD is 90

SBFSPEED is 60

SBSPERIOD is 1800

SBSSPEED is 5

SBTANGLE is 27

SBTSLOPE is 0

SBTTIME is 0

SLOTTIME is 15

SOFTRST is TRUE

SSIDROUTE is 0

STATUSRATE is 1

TALT is TRUE

TDAO is 0

TELHIRES is TRUE

TELREAD is FALSE

TELTEMP is TRUE

TELVOLT is TRUE

TIMEHMS is TRUE

TIMESTAMP is TRUE

TOSV is FALSE

TPERIOD is 900

TPROTOCOL is MIC-E

TPSWITCH is 0

TRNKMODE is 0

TSOFFSET is 17

TSPEED is TRUE

TSTAT is /TinyTrak Alpha Bat+^V Temp+^T

TSWPT is TRUE

TSYMCODE is #

TSYMTABLE is /

TTEMPTWK is 113

TVOLTTWK is 255

TXD is 40

TXFREQ is 144.390

TXLEVEL is 126

TXTDISP is FALSE

TXTWIST is 50

WPERIOD is 0

WXPOS is FALSE

WYPTXT is FALSE Thanks Neal Aguillard KNRUSN-2

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I'm also working on this, wanting to graph the voltage and temperature telemetry obtained with ^V and ^T. I am using the low resolution setting but otherwise the settings are the same. I'm not at he site now so I can't send the setting list but I was working with it this afternoon and am pretty sure the settings are ok. Also, when I'm working low resolution(TELHIRES is FALSE), can you confirm that I don't have to send equation coefficients. More importantly, where do I put those in--I don't see it described in the TT4 parameter command list. Is it done at aprs.fi? Where is this described?

You can see our data at aprs.fi, filtered on W1BST. We're using an MTT4BT.

Ralph Simons
KC1RWK

I didn't wee any graphs for W1BST (other than weather data).??As far as I know, there are no sites that will graph data in a status message.? You must send the data as a telemetry message (TPERIOD > 0).? The information displayed in BTEXT or TSTAT (using ^V and ^T) is not conveniently formatted for graphing.? You must use the Telemetry settings to provide the data in the proper format for graphing.? Doing so, the TT4 (or variant) will provide 5 values between 0 and either 999 (TELHIRES TRUE) or 255 (TELHIRES FALSE).? HOWEVER, there is a convenient setting to change the values from normal Analog-to-digital values to "HUMAN READABLE values for Voltage and temperature only.??

Simple Solution/Answer:
? ?TELHIRES FALSE
? ?TELREAD TRUE
The Temperature value will be the integer value and graph properly (second value sent).? The voltage values will be 10 times the actual value read.? So (as the manual's example shows) 12.8V will be graphed as 128.? UNLESS, you provide the EQN information.? ?For information on sending the PARM, UNIT, EQN, and BITS messages, I'll point you to the APRS101.pdf file chapter 13.? But I will add that the messages are sent "TO" the callsign-ssid of the transmitting station (to identify which callsign-ssid the information pertains to).

If you want to use additional signals (like another temperature sensor) connected to the other analog inputs of the MTT4BT, we can go through that in additional posts.? They WILL almost certainly require the EQN be sent to interpret the information in "human readable" format.

-----
Robert Giuliano
KB8RCO

Robert,

Thank you for pointing me to APRS101.pdf -- I've read it once, studied it some but nothing like a real application to make the learning stick. I think I will stick with your option 2 descibed in your first answer and repeated for me as well. One question: sending and APRS message is a manual operation from a terminal -- I'm ok with that but how often does it need to be sent? Just one and done as long as it's received by aprs.fi and associated with our call? and then if the coefficients change or more telemetry is added or we implement your Option 3, send it again to update aprs.fi and anybody else who cares??

Also, is it true that the BTT4BT will send all five analog values and the 8 bit values, even though I'm just using the first two analog values for voltage and temperature? I think that would result in needless data at aprs.fi, but more importantly, meaningless data that would show up. Hmm ... just thinking. You know, I remember that it shows up anyway, but just one (or an empty) data set, so there's already a space for it, just no data records. We'll see what happens.

It will be a few days before I get back to the club's shack to implement the changes, but I'll follow up when I do. Thanks so much for the help and the direction. So I left you with a couple questions ...

Ralph Simons
KC1RWK

I am not really sure how the different servers/clients keep track of the parameters.?
? ?Best guess is that they keep what they were given, until new data comes along.?
? ?So if you send the messages once, they should be good (for all the stations who receive it).?
? ?Since you are particularly interested in aprs.fi, you will know when the information is set properly.
? ? ? Just check on the callsign >Info >Telemetry

Yes, the Telemetry message is formatted in a specific way to provide 5 analog sensors and 8 "flags" or bits.
? ? Personally, I would send the constants so that the reported values are always in volts.? That way the values are always relevant to the input.
? ? So, depending on what you have TELHIRES, the constants would be:? 5 Volts / 255 bits or 0.0196 or 5 Volts / 999 bits or .005
? ? With TELREAD TRUE (so the first 2 channels are "human Readable"),?the "non-specified" channels would be:
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? |----Bat-----|-Temp--|--------JP5-------|--------JP4-------|-------JP3-------|
? ? TELHIRES FALSE:? ? ? ? :EQNS.0,0.1,0,0,1,0,0,0.0196,0,0,0.0196,0,0,0.0196,0
? ? TELHIRES TRUE:? ? ? ? ? :EQNS.0,0.1,0,0,1,0,0,0.0005,0,0,0.0005,0,0,0.0005,0
and
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?:PARM.Battery,Temp,V_J5,V_J4,V_J3
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?UNIT.Volts,Deg_F,Volts,Volts,Volts
When undefined analog inputs are reading volts, there is at least some meaning to the value.??
If, at some point later, you cannot a sensor, then the sensor parameters can easily be used to convert to engineering units.
? ?Example:? a atm pressure sensor that provides 250 mBar per volts:? when the channels reads 4 volts, the sensor is at 1000 mBar.

-----
Robert Giuliano
KB8RCO

On Thu, Feb 16, 2023 at 10:19 AM, Rob Giuliano wrote:

I am not really sure how the different?

Perfect! Very helpful. Cant wait to try it out.

Ralph
Kc1rwk

开云体育

Anyone know what to use for the map symbol code on the tracker4 so it shows up as an iGate? I have "/k" right now but it shows up as a truck.

73 KI7AY

On Thu, Feb 16, 2023 at 10:19 AM, Rob Giuliano wrote:

I am not really sure how the different?

Perfect! Very helpful. Cant wait to try it out.

Ralph
Kc1rwk

-- 
73 Jim,KI7AY
la ciruela y cabeza de hueso en Panama